This is quite possibly the most historically significant quartz watch ever made.

Many of the cheapest watches you can buy are more accurate and reliable than the most expensive ones. That ironic dichotomy is made possible in part by a little technology called the quartz movement, and it all started with a watch released on Christmas day 1969 in Japan. The Seiko Quartz Astron 35SQ, as it was called, was marketed with the line “Someday, all watches will be made this way.”
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